Definition:Ellipse/Vertex

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Definition

EllipseParts.png

Consider an ellipse $K$.


A vertex of $K$ is either one of the endpoints of the major axis of $K$.


In the above diagram, $V_1$ and $V_2$ are the vertices of $K$.


Also see


Linguistic Note

The plural of vertex is vertices.

The word vertex is Latin for peak, from which the irregular plural form.